This book covers all areas of chemical research. The contributions by the authors include biocatalyst, organic synthesis, heterocyclic compounds, leaf extract,  phospholipase A2,  nanofibers,  galvanic displacement, HgSe chalcogenide, spent synthetic-based drilling mud, heavy metals, nano zero-valent iron, vegetable seed oils, physiochemical properties, thermal factor, zinc oxide, thin films, optical properties, essential oil, acrylonitrile, binary liquid mixture, 1, 4-Dioxane, molecular interactions and ultrasonic velocity, camylofin, electro-oxidation, carbon paste electrode, differential pulse voltammetry, micellar media, flavonoids, quercetin, kaempferol, quercetin 3-0-rutin, kaempferol 3-0-? glucopyranoside etc. This book contains various materials suitable for students, researchers and academicians in the field of chemical research.